DOW HYDROCARBONS & RESOURCES LLC - GRAND BAYOU OPERATIONS

NPDES permit LA0049310 · Minor NON-POTW · effective, expires 2029-10-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

EPA's record, 2025-09-01 to 2026-08-31

3values over a limit
0required values missing, on 0 form(s)
0of 18 forms filed late

Last period with anything received: 2026-06-30. Most often over: Chloride [as Cl] (2), Solids, total suspended (1).

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among LA permits in EPA's filings — check your permit).

Limits in force (43)

OutfallParameterStatisticLimitMonths
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedDAILY MX <= 45 mg/L all year
001Oil & GreaseDAILY MX <= 15 mg/L all year
001Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
001Chloride [as Cl]DAILY MX <= 500 mg/L all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
002pHINST MIN >= 6 SU all year
002pHINST MAX <= 9 SU all year
002Solids, total suspendedDAILY MX <= 50 mg/L all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
002Chloride [as Cl]DAILY MX <= 500 mg/L all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
004pHINST MIN >= 6 SU all year
004pHINST MAX <= 9 SU all year
004Solids, total suspendedDAILY MX <= 45 mg/L all year
004Oil & GreaseDAILY MX <= 15 mg/L all year
004Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
004Chloride [as Cl]DAILY MX <= 500 mg/L all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
104BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
104BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
104Solids, total suspendedMO AVG <= 30 mg/L all year
104Solids, total suspendedDAILY MX <= 45 mg/L all year
104Flow, in conduit or thru treatment plantMO AVG report only all year
104Flow, in conduit or thru treatment plantDAILY MX report only all year
104Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
104Coliform, fecal generalDAILY MX <= 400 #/100mL all year
106pHINST MIN >= 6 SU all year
106pHINST MAX <= 9 SU all year
106Solids, total suspendedDAILY MX <= 90 mg/L all year
106Solids, total suspendedDAILY MX <= 90 mg/L all year
106Oil & GreaseDAILY MX <= 15 mg/L all year
106Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
106Lead, total [as Pb]DAILY MX <= 50 ug/L all year
106BenzeneDAILY MX <= 50 ug/L all year
106BTEXDAILY MX <= 250 ug/L all year
106Flow, in conduit or thru treatment plantMO AVG report only all year
106Flow, in conduit or thru treatment plantDAILY MX report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states